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<?php |
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declare(strict_types=1); |
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/** |
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* @copyright Copyright (c) 2018, Roeland Jago Douma <[email protected]> |
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* |
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* @author Joas Schilling <[email protected]> |
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* @author Julius Härtl <[email protected]> |
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* @author Roeland Jago Douma <[email protected]> |
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* @author Anna Larch <[email protected]> |
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* |
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* @license GNU AGPL version 3 or any later version |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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*/ |
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namespace OCA\DAV\CardDAV; |
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use OCA\DAV\Exception\UnsupportedLimitOnInitialSyncException; |
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use OCA\Federation\TrustedServers; |
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use OCP\Accounts\IAccountManager; |
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use OCP\IConfig; |
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use OCP\IGroupManager; |
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use OCP\IL10N; |
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use OCP\IRequest; |
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use OCP\IUserSession; |
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use Sabre\CardDAV\Backend\SyncSupport; |
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use Sabre\CardDAV\Backend\BackendInterface; |
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use Sabre\CardDAV\Card; |
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use Sabre\DAV\Exception\Forbidden; |
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use Sabre\DAV\Exception\NotFound; |
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use Sabre\VObject\Component\VCard; |
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use Sabre\VObject\Reader; |
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use function array_filter; |
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use function array_intersect; |
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use function array_unique; |
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use function in_array; |
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class SystemAddressbook extends AddressBook { |
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public const URI_SHARED = 'z-server-generated--system'; |
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/** @var IConfig */ |
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private $config; |
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private IUserSession $userSession; |
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private ?TrustedServers $trustedServers; |
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private ?IRequest $request; |
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private ?IGroupManager $groupManager; |
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public function __construct(BackendInterface $carddavBackend, |
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array $addressBookInfo, |
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IL10N $l10n, |
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IConfig $config, |
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IUserSession $userSession, |
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?IRequest $request = null, |
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?TrustedServers $trustedServers = null, |
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?IGroupManager $groupManager) { |
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parent::__construct($carddavBackend, $addressBookInfo, $l10n); |
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$this->config = $config; |
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$this->userSession = $userSession; |
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$this->request = $request; |
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$this->trustedServers = $trustedServers; |
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$this->groupManager = $groupManager; |
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$this->addressBookInfo['{DAV:}displayname'] = $l10n->t('Accounts'); |
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$this->addressBookInfo['{' . Plugin::NS_CARDDAV . '}addressbook-description'] = $l10n->t('System address book which holds all accounts'); |
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} |
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/** |
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* No checkbox checked -> Show only the same user |
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* 'Allow username autocompletion in share dialog' -> show everyone |
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* 'Allow username autocompletion in share dialog' + 'Allow username autocompletion to users within the same groups' -> show only users in intersecting groups |
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* 'Allow username autocompletion in share dialog' + 'Allow username autocompletion to users based on phone number integration' -> show only the same user |
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* 'Allow username autocompletion in share dialog' + 'Allow username autocompletion to users within the same groups' + 'Allow username autocompletion to users based on phone number integration' -> show only users in intersecting groups |
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*/ |
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public function getChildren() { |
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$shareEnumeration = $this->config->getAppValue('core', 'shareapi_allow_share_dialog_user_enumeration', 'yes') === 'yes'; |
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$shareEnumerationGroup = $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_group', 'no') === 'yes'; |
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$shareEnumerationPhone = $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_phone', 'no') === 'yes'; |
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$user = $this->userSession->getUser(); |
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if (!$user) { |
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// Should never happen because we don't allow anonymous access |
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return []; |
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} |
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if ($user->getBackendClassName() === 'Guests' || !$shareEnumeration || (!$shareEnumerationGroup && $shareEnumerationPhone)) { |
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$name = SyncService::getCardUri($user); |
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try { |
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return [parent::getChild($name)]; |
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} catch (NotFound $e) { |
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return []; |
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} |
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} |
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if ($shareEnumerationGroup) { |
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if ($this->groupManager === null) { |
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// Group manager is not available, so we can't determine which data is safe |
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return []; |
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} |
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$groups = $this->groupManager->getUserGroups($user); |
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$names = []; |
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foreach ($groups as $group) { |
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$users = $group->getUsers(); |
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foreach ($users as $groupUser) { |
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if ($groupUser->getBackendClassName() === 'Guests') { |
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continue; |
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} |
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$names[] = SyncService::getCardUri($groupUser); |
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} |
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} |
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return parent::getMultipleChildren(array_unique($names)); |
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} |
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$children = parent::getChildren(); |
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return array_filter($children, function (Card $child) { |
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// check only for URIs that begin with Guests: |
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return strpos($child->getName(), 'Guests:') !== 0; |
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}); |
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} |
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/** |
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* @param array $paths |
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* @return Card[] |
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* @throws NotFound |
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*/ |
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public function getMultipleChildren($paths): array { |
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$shareEnumeration = $this->config->getAppValue('core', 'shareapi_allow_share_dialog_user_enumeration', 'yes') === 'yes'; |
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$shareEnumerationGroup = $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_group', 'no') === 'yes'; |
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$shareEnumerationPhone = $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_phone', 'no') === 'yes'; |
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$user = $this->userSession->getUser(); |
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if (($user !== null && $user->getBackendClassName() === 'Guests') || !$shareEnumeration || (!$shareEnumerationGroup && $shareEnumerationPhone)) { |
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// No user or cards with no access |
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if ($user === null || !in_array(SyncService::getCardUri($user), $paths, true)) { |
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return []; |
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} |
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// Only return the own card |
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try { |
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return [parent::getChild(SyncService::getCardUri($user))]; |
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} catch (NotFound $e) { |
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return []; |
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} |
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} |
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if ($shareEnumerationGroup) { |
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if ($this->groupManager === null || $user === null) { |
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// Group manager or user is not available, so we can't determine which data is safe |
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return []; |
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} |
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$groups = $this->groupManager->getUserGroups($user); |
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$allowedNames = []; |
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foreach ($groups as $group) { |
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$users = $group->getUsers(); |
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foreach ($users as $groupUser) { |
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if ($groupUser->getBackendClassName() === 'Guests') { |
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continue; |
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} |
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$allowedNames[] = SyncService::getCardUri($groupUser); |
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} |
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} |
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return parent::getMultipleChildren(array_intersect($paths, $allowedNames)); |
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} |
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if (!$this->isFederation()) { |
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return parent::getMultipleChildren($paths); |
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} |
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$objs = $this->carddavBackend->getMultipleCards($this->addressBookInfo['id'], $paths); |
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$children = []; |
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/** @var array $obj */ |
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foreach ($objs as $obj) { |
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if (empty($obj)) { |
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continue; |
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} |
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$carddata = $this->extractCarddata($obj); |
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if (empty($carddata)) { |
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continue; |
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} else { |
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$obj['carddata'] = $carddata; |
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} |
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$children[] = new Card($this->carddavBackend, $this->addressBookInfo, $obj); |
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} |
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return $children; |
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} |
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/** |
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* @param string $name |
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* @return Card |
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* @throws NotFound |
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* @throws Forbidden |
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*/ |
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public function getChild($name): Card { |
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$user = $this->userSession->getUser(); |
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$shareEnumeration = $this->config->getAppValue('core', 'shareapi_allow_share_dialog_user_enumeration', 'yes') === 'yes'; |
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$shareEnumerationGroup = $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_group', 'no') === 'yes'; |
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$shareEnumerationPhone = $this->config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_phone', 'no') === 'yes'; |
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if (($user !== null && $user->getBackendClassName() === 'Guests') || !$shareEnumeration || (!$shareEnumerationGroup && $shareEnumerationPhone)) { |
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$ownName = $user !== null ? SyncService::getCardUri($user) : null; |
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if ($ownName === $name) { |
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return parent::getChild($name); |
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} |
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throw new Forbidden(); |
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} |
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if ($shareEnumerationGroup) { |
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if ($user === null || $this->groupManager === null) { |
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// Group manager is not available, so we can't determine which data is safe |
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throw new Forbidden(); |
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} |
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$groups = $this->groupManager->getUserGroups($user); |
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foreach ($groups as $group) { |
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foreach ($group->getUsers() as $groupUser) { |
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if ($groupUser->getBackendClassName() === 'Guests') { |
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continue; |
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} |
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$otherName = SyncService::getCardUri($groupUser); |
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if ($otherName === $name) { |
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return parent::getChild($name); |
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} |
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} |
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} |
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throw new Forbidden(); |
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} |
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if (!$this->isFederation()) { |
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return parent::getChild($name); |
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} |
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232
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$obj = $this->carddavBackend->getCard($this->addressBookInfo['id'], $name); |
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if (!$obj) { |
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234
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throw new NotFound('Card not found'); |
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} |
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$carddata = $this->extractCarddata($obj); |
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if (empty($carddata)) { |
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throw new Forbidden(); |
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} else { |
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$obj['carddata'] = $carddata; |
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} |
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return new Card($this->carddavBackend, $this->addressBookInfo, $obj); |
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} |
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244
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245
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/** |
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246
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* @throws UnsupportedLimitOnInitialSyncException |
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247
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*/ |
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248
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public function getChanges($syncToken, $syncLevel, $limit = null) { |
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249
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if (!$syncToken && $limit) { |
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throw new UnsupportedLimitOnInitialSyncException(); |
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} |
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252
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253
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if (!$this->carddavBackend instanceof SyncSupport) { |
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254
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return null; |
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255
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} |
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256
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257
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if (!$this->isFederation()) { |
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258
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return parent::getChanges($syncToken, $syncLevel, $limit); |
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} |
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260
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261
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$changed = $this->carddavBackend->getChangesForAddressBook( |
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$this->addressBookInfo['id'], |
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$syncToken, |
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$syncLevel, |
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$limit |
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); |
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267
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268
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if (empty($changed)) { |
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return $changed; |
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270
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} |
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271
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272
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$added = $modified = $deleted = []; |
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273
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foreach ($changed['added'] as $uri) { |
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274
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try { |
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275
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$this->getChild($uri); |
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276
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$added[] = $uri; |
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277
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} catch (NotFound | Forbidden $e) { |
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278
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$deleted[] = $uri; |
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} |
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280
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} |
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281
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foreach ($changed['modified'] as $uri) { |
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282
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try { |
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283
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$this->getChild($uri); |
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284
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$modified[] = $uri; |
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285
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} catch (NotFound | Forbidden $e) { |
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286
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$deleted[] = $uri; |
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287
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} |
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288
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} |
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289
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$changed['added'] = $added; |
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290
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$changed['modified'] = $modified; |
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291
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$changed['deleted'] = $deleted; |
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292
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return $changed; |
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293
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} |
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294
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295
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private function isFederation(): bool { |
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296
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if ($this->trustedServers === null || $this->request === null) { |
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297
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return false; |
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298
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} |
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299
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|
300
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/** @psalm-suppress NoInterfaceProperties */ |
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301
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$server = $this->request->server; |
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302
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|
if (!isset($server['PHP_AUTH_USER']) || $server['PHP_AUTH_USER'] !== 'system') { |
|
303
|
|
|
return false; |
|
304
|
|
|
} |
|
305
|
|
|
|
|
306
|
|
|
/** @psalm-suppress NoInterfaceProperties */ |
|
307
|
|
|
$sharedSecret = $server['PHP_AUTH_PW'] ?? null; |
|
308
|
|
|
if ($sharedSecret === null) { |
|
309
|
|
|
return false; |
|
310
|
|
|
} |
|
311
|
|
|
|
|
312
|
|
|
$servers = $this->trustedServers->getServers(); |
|
313
|
|
|
$trusted = array_filter($servers, function ($trustedServer) use ($sharedSecret) { |
|
|
|
|
|
|
314
|
|
|
return $trustedServer['shared_secret'] === $sharedSecret; |
|
315
|
|
|
}); |
|
316
|
|
|
// Authentication is fine, but it's not for a federated share |
|
317
|
|
|
if (empty($trusted)) { |
|
318
|
|
|
return false; |
|
319
|
|
|
} |
|
320
|
|
|
|
|
321
|
|
|
return true; |
|
322
|
|
|
} |
|
323
|
|
|
|
|
324
|
|
|
/** |
|
325
|
|
|
* If the validation doesn't work the card is "not found" so we |
|
326
|
|
|
* return empty carddata even if the carddata might exist in the local backend. |
|
327
|
|
|
* This can happen when a user sets the required properties |
|
328
|
|
|
* FN, N to a local scope only but the request is from |
|
329
|
|
|
* a federated share. |
|
330
|
|
|
* |
|
331
|
|
|
* @see https://github.com/nextcloud/server/issues/38042 |
|
332
|
|
|
* |
|
333
|
|
|
* @param array $obj |
|
334
|
|
|
* @return string|null |
|
335
|
|
|
*/ |
|
336
|
|
|
private function extractCarddata(array $obj): ?string { |
|
337
|
|
|
$obj['acl'] = $this->getChildACL(); |
|
338
|
|
|
$cardData = $obj['carddata']; |
|
339
|
|
|
/** @var VCard $vCard */ |
|
340
|
|
|
$vCard = Reader::read($cardData); |
|
341
|
|
|
foreach ($vCard->children() as $child) { |
|
342
|
|
|
$scope = $child->offsetGet('X-NC-SCOPE'); |
|
343
|
|
|
if ($scope !== null && $scope->getValue() === IAccountManager::SCOPE_LOCAL) { |
|
344
|
|
|
$vCard->remove($child); |
|
345
|
|
|
} |
|
346
|
|
|
} |
|
347
|
|
|
$messages = $vCard->validate(); |
|
348
|
|
|
if (!empty($messages)) { |
|
349
|
|
|
return null; |
|
350
|
|
|
} |
|
351
|
|
|
|
|
352
|
|
|
return $vCard->serialize(); |
|
353
|
|
|
} |
|
354
|
|
|
|
|
355
|
|
|
/** |
|
356
|
|
|
* @return mixed |
|
357
|
|
|
* @throws Forbidden |
|
358
|
|
|
*/ |
|
359
|
|
|
public function delete() { |
|
360
|
|
|
if ($this->isFederation()) { |
|
361
|
|
|
parent::delete(); |
|
362
|
|
|
} |
|
363
|
|
|
throw new Forbidden(); |
|
364
|
|
|
} |
|
365
|
|
|
|
|
366
|
|
|
public function getACL() { |
|
367
|
|
|
return array_filter(parent::getACL(), function ($acl) { |
|
368
|
|
|
if (in_array($acl['privilege'], ['{DAV:}write', '{DAV:}all'], true)) { |
|
369
|
|
|
return false; |
|
370
|
|
|
} |
|
371
|
|
|
return true; |
|
372
|
|
|
}); |
|
373
|
|
|
} |
|
374
|
|
|
} |
|
375
|
|
|
|
nextcloud /
server
Loading history...
Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: